Radioactive Rocket Fuel by JonathanG
Your spaceship is equipped with the latest engine technology, enabling space exploration like never before! However... it uses an unstable radioactive isotope that decays every 10 seconds, causing your ship to explode if you ever run out of fuel. Good luck!
Use the arrow keys to fly the spaceship. Fortunately there is plenty of unstable radioactive isotope just floating around in space, so just grab some if you're running low! When you've landed on a planet you can use the mouse or arrow keys to navigate the menus, trade resources, and become rich!

I didn't have time to write more than 8 bars of music, so I left it out otherwise it would be too repetitive.
Tools used: - Godot - GIMP and Inkscape for the 2D graphics - Blender for the planets - sfxr for the sound effects - VS Code and git for version control
Ratings
| Overall | 305th | 3.283⭐ | 25🧑⚖️ |
| Fun | 315th | 3.13⭐ | 25🧑⚖️ |
| Innovation | 250th | 3.283⭐ | 25🧑⚖️ |
| Theme | 196th | 3.69⭐ | 23🧑⚖️ |
| Graphics | 264th | 3.386⭐ | 24🧑⚖️ |
| Audio | 334th | 2.738⭐ | 23🧑⚖️ |
| Humor | 271th | 2.452⭐ | 23🧑⚖️ |
| Mood | 262th | 3.167⭐ | 23🧑⚖️ |
| Given | 15🗳️ | 27🗨️ |
When trading buy whole button would be great. Also after buying the upgrade there is nothing to do with money. There could be more upgrades and cosmetic could be added to compensate for trade system and excess of money.
It's a bit awkward steering with the arrow keys though.
It would've been amazing to steer with your mouse cursor, and to be able to use the WASD keys as alternatives to the arrow keys.
I managed to reach the red planet :stuck_out_tongue_closed_eyes:
Well done!
I liked how every feature in the game has an important role. You can't reach the end without an upgrade and you can't upgrade without trade and you can't trade without using the isotope collection. Very nice.
I don't know if it is my very wide monitor but for me the front row of stars disappeared from time to time. Noting game breaking just a note. :wink:
I think a minimap might be a cool addition to help with planning.
The physics felt very spacey, I like the challenge of cancelling out momentum as part of navigation.
Also perhaps the coolest take on the theme I've seen so far :))
Maybe make the fuel pellets a bit bigger, I felt like I was frustratingly close to hitting some but still missed.
Overall, nice game!
1. "an unstable radioactive isotope that decays every 10 seconds" -> story-wise, this is clever :)
2. "I didn’t have time to write more than 8 bars of music, so I left it out otherwise it would be too repetitive." -> when in doubt, you can let the player decide. (I should have done so for difficulty, but hey, Captain Hindsight XD)
3. I like that there is a double control mode (economy management + flight)
4. launch sound! :) Oh, but no thruster sound then? <:o I think it would have been a good idea (you could argue there is no sound in space…)
5. already dead XD
6. as others said, the parallax layers of stars are a beautiful simple effect; great to add to immersion through simple techniques :) Also like that the ship lands oriented according to land site (I had a similar way of dealing with discs in a (still buggy) game called *Clock Work*)
7. going far: nothing, only isotopes too late XD I am unlucky today!
8. the ship’s inertia is quite something, made me miss a vital isotope (… and explode once again). I wonder if reducing it would be a good idea, since we have to be fast, but then again, maybe this is part of the intended difficulty
9. at last another planet (Astarongolia Alpha)! Maybe some more elements in space could help us have a clue where to go? Or maybe the isotopes, but this might make things too obvious. (later: thanks to the map tip, I see this *is* the case!)
10. I like how the planet’s trivia also incorporates the theme
11. I get the economy system: different prices for different planets
12. **[spoiler]** glad I found this planet first for the super useful map hint! Now navigating holding the secret key. Nothing upwards, dying again XD Cosmic karma is against me!
13. (in Exspinnia) I feel like figuring out the comparative resource prices will be a mess! X) This is a game where taking notes could help. By the way, found four planets (counting the very first launch site one); how many are there?
14. found a fifth one; how punishing it is to miss an isotope, if you do not go in a straight line, some routes get you killed!
15. hey, you do NOT lose money, apparently! (only resources)
16. Reached Sendikar. I wish there was an automatic pilot feature as in *Outer Wilds* XD
17. the way the ‘Chat’ features makes you discover the world is really great :) (and I thought the same about saying ‘north’ earlier in my comment, using ‘upwards’ XD)
18. LIES!! Followed the indication, died out of nothingness and lost 1 blue unit <:o (I guess the engine has to be upgraded??)
19. the bottom-right isotope lead was also a trap of sorts… XD By the way, not losing resources every time, apparently
20. economy: simply find myself shuttling back and forth between two planets; I think this means the system may be overcomplicated (and there is a so-called ‘dominant strategy’). Glad about this, because it would have been too tedious otherwise XD **[spoiler]** Astarongolia Alpha - Sendikar: only blue
21. bug: because I missed the last isotope right before Sendikar, the ship exploded RIGHT when landing, so I still get the menu! Launching then displays the explosion animation, but the game still runs, phew X)
22. $1,020! So I can take my upgrade; BUT I should spare a bit first: can you get locked if you mismanage your money??
23. upgrading engine(s): oh, does it on clicking instead of giving the choice! I think it would be better to know, especially for subsequent upgrades (will it still be a thousand dollars, or more?)
24. there seems to be a speed-reducing field around The Mysterious Vadarius (made me explode some times)
25. oh, the end! :o By the way, trying, I realize you cannot upgrade the engine twice, and that you can upgrade anywhere (instead of coming back to the home planet — as I did X)). I still wonder whether I found all planets (I found around six?)
26. hahaha, I like the final joke of still having priced resources there! XD
(1/2)
**Takeaway:** the game feels like its own little coherent universe, with several aspects (piloting, exploration, trade, dialogue), while the theme is cleverly incorporated; this is somewhat impressive! There are other space games with resource management (such as *No Man’s Sky*), but it still has its personality. I see two main drawbacks: 1) although this can be made on purpose, is this ship HARD to navigate with such inertia!! I could barely enjoy the nicely manoeuvrable upgraded-engine version, since it allows you to reach the end! 2) The complexity of the system’s economy suffers from letting the player have a ‘dominant strategy’ of very profitable simple straightfoward 2-planet 1-resource trade, for little risk involved (although I did still die during the journey on some occasions XD). And had it not been that way, it would have been complicated, almost requiring you to take down notes on each planet, and painstakingly find a route between several planets for indirect financial speculation.
Thanks for the immersive space odyssey. :)
**Afterthought:** I guess you cannot get stuck because you can only upgrade once, and there may be some security so that you always have at least one unit of some resource (which should be sufficient to trade your way to the top?).
PS: I saw you have 19.875 votes(!), here is the precious 20-sesame. ;)
PPS: the planets are really beautiful. They are in contrast with the isotopes that look a bit arcadey, but why not. :) I also wonder if there are secrets and let the game running. X)
Also these are really beautifull planets!
Well done!
I hope I'm not sounding too harsh on you here. I want to like this, as it's clearly had a lot of effort put into it within the Compo deadline, but I can't actually play enough of it to make a fair judgement.
I'd also like to respond to some of your feedback, as there are a few themes running through the comments.
Firstly, the flight controls. For a game like this it is common to have completely frictionless physics where every thrust and turn must be compensated for to change direction. Personally I dislike that feeling, so I put in some dampening physics (i.e. the ship's movement and turning slow down if you let go of the controls). I played around with the variables for a bit until it felt right to me, but @jackaljk and an anonymous reviewer found the controls awkward. Others, like @senover-games, enjoyed the flying. @james-joubert suggested using the mouse to navigate, and if I had implemented something like that it might also have worked for touch controls (I tried the game on my phone's browser only to find that the ship would launch and then explode).
Secondly, the trading economy. I've always liked the idea of flying around and trying to find the most profitable deals, but in practice I think that is difficult to do well in a game. As @mossieur-patate points out there are some obvious dominant strategies, but maybe the alternative would have been too boring and arbitrary. I couldn't spend much time balancing this because the entire trading and economy system was added in the last few hours of the compo. As @douwe-ravers points out the trading, upgrading and exploration are all linked, so I'm glad I was able to get one upgrade into the game, but as you might guess from the very limited UI, I didn't have time to add more upgrades as I would have liked. @deniz-aras, @zubspace and @jackaljk all mentioned a "buy/sell all" button, which would have been good in hindsight!
Thirdly, the planets. There are in fact 7 planets to visit, but they are spaced out so that you need the upgrade to get to two of them. @hneumann, @senover-games and @f1krazy found it difficult to navigate to (or even find) the planets. @3ncryp73d and @f1krazy suggested a minimap. This was something I wrestled with while planning out the solar system; 10 seconds of fuel can actually get you quite far, in terms of the number of "screen widths" you can travel in that time, so to present the challenge I had to make the planets even further apart than that with fuel collectables in between. One option is to make the ship travel more slowly and the planets closer together, but I didn't think it would feel as exciting to fly. This is the compromise I came up with: the first planet launches you "upwards" and if you keep flying in that direction, you have to deviate slightly to collect the fuel but you will eventually come across the "second" planet. On that planet the "Chat" option tells you about pressing the M key, which I implemented as a really simple camera zoom out. This enables you to at least see the planets from further away, but still get the sensation of speed when zoomed back in again (however the parallax breaks while zoomed out). When you take off from a planet, the surrounding fuel collectables are generally in directions such that, if you collect them and keep travelling in the same direction away from the planet, you'll eventually come across another collectable or planet. Towards the end of the compo I wanted to add little arrows around the edges of the screen pointing to nearby points of interest, but I ran out of time to implement them.
@aligator I'm glad you like the planets, I found a good tutorial on YouTube for creating them in Blender, then I could mix up the colours and the generated textures to make different ones with different atmospheres (pun unintended).
@ha1fbit you found a bug - as @mossieur-patate suspected there's a safeguard if you explode too many times; if your inventory and cash are both zero it will give you $10. However this only happens at the point at which you lose the cargo, so if you sell all your goods for $1,000 and then upgrade, you can be left with nothing. However, as @deniz-aras said, once you have the upgrade then money becomes worthless
Once again, thank you everybody for playing the game and leaving such good feedback!