Base Defense by pvg
Overview
Build turrets to protect your base. Use your beam to gather crucial resources. Watch out for meteors!
Instructions
Place new turrets with the mouse. Each one costs 300 resources.
Destroy the evil spheres with your turrets, and they will drop resource shards.
Press space bar or spin the mouse wheel to change to tractor beam mode. Hover the beam over the shards to collect them.
Meteors fall every ten seconds and destroy a random one of your turrets.
Playing the game
You can play the web build now, although you will get better performance from the native builds on the GitHub releases page.
Screenshots

| GitHub Repository | https://github.com/doctor-g/LD51 |
| Link | https://doctor-g.github.io/LD51/ |
| Link | https://github.com/doctor-g/LD51/releases |
| Link | https://github.com/doctor-g/LD51/releases |
| Original URL | https://ldjam.com/events/ludum-dare/51/base-defense |
Ratings
| Overall | 407th | 3⭐ | 22🧑⚖️ |
| Fun | 337th | 3.05⭐ | 22🧑⚖️ |
| Innovation | 416th | 2.763⭐ | 21🧑⚖️ |
| Theme | 391th | 3.175⭐ | 22🧑⚖️ |
| Graphics | 442th | 2.575⭐ | 22🧑⚖️ |
| Audio | 239th | 3.132⭐ | 21🧑⚖️ |
| Mood | 360th | 2.833⭐ | 20🧑⚖️ |
| Given | 16🗳️ | 14🗨️ |
Well done.
The one thing I really wanted to add, that I didn't have time, was a way to ensure the game always ends. Right now, dedicated players can reach a point where they have enough turrets that the game goes on forever. I wanted to set up a counter to this, where the meteor destroys not just the turret it hits, but adjacent or nearby ones as well.
They were also going to have legs or something... but you know, evil brightly colored balls also works in a pinch. :)
I originally wanted to have a slower build up of enemies, but I just didn't have the spare cycles.
Balance is a funny thing. I did want the experience to be pretty fast, so that someone could play the game several times in a row and feel like they were getting better at it. I prefer this, especially in jam games, over long experiences where it's not clear if you're getting better or not. That said, I've been really surprised by watching other people play it. I mean, that should not surprise me, but users are always surprising. Some people find it too slow, and others hop in and sort out a strategy that ends up with them putting turrets on every space on the board.
If I were to continue this, I have ideas for features... but I'd probably start with more careful watching of people playing it.
Besides that, great game!! :P