Rather than just post a screenshot of my votes or painstakingly commenting on every single one, I thought it would be more interesting to pick out a few themes that stand out to me - both for positive and negative reasons - and give a little commentary on them. These are just my opinions, of course - I'd be curious to know what other people think of these themes too.

DON'T Like: Delivery

This seems a bit too restrictive and specific to me. I imagine that a large number of games would fall into one of two categories:

• Games about delivering mail, packages, etc (only so many different ways to do this)

• Games where the theme is slapped on, i.e. the game is in whatever genre and whatever setting but the story for the game is "you have to deliver X to Y" and when you beat the game it says "congratulations you delivered X to Y"

I think the trouble is, at the end of the day "Delivery" is just going from point A to point B while taking something with you... it's tough to make a game about that without the theme feeling tacked on without outright making a game about a mailman.

DO Like: Everything Changes at Night

In one sense this is somewhat specific, but I think in practical terms there is a ton that could be done with it. Just about ANY genre of game could incorporate the passage of time and a cycle between day and night. Plus, it doesn't necessarily have to be a gameplay mechanic - it could be a story beat, too. And while the theme says everything changes at night, obviously what exactly it is that does change at night is highly variable - the environment? Your character's abilities? Maybe day and night are actually completely different types of gameplay? I think there is a ton of variety with what you could do with this theme. To give a few examples:

• A survival game where the player has to collect resources during the day and fend off monsters at night

• A metroidvania game where the environments change somewhat between day and night which impacts how you explore the game world

• A horror game where the environment seems harmless during the day but turns creepy at night

• A puzzle game where the player can freely switch between day and night which changes the behavior of some of the elements of the game which is needed to solve the puzzles

• A dating sim featuring werewolves

• A strategy RPG where the time of day changes every few turns and your characters have magical abilities that are powered up by sunlight or moonlight, so you must adapt your strategy to the day/night cycle

DON'T Like: The Environment Changes You

I have trouble coming up with a diverse array of concepts for this one. To me, it seems like it lends itself very well to one particular sort of puzzle solving mechanic - a mechanic where stepping on certain types of tiles changes your properties or abilities which you then need to take advantage of to progress. This could be quite interesting, but leading to one good idea does not a good theme make. I have a tough time brainstorming much else...

Sure, I suppose there are some cheeky ways of interpreting the theme. E.g. "the environment" as in "environmentalism" therefore "climate change" and your game could be about, I dunno, a game about a radicalized eco-fascist featuring thinly-veiled commentary on the politics of climate policy?

I feel like there are some scope-related issues here too - some of the ideas I have don't really seem practical. A game where the players abilities dynamically change depending on what sort of environment they're in is interesting, but requires much more work than simply giving the player a fixed set of abilities. A psychological, narrative driven game tackling big issues like how the social environment a person is in can influence the way that they think in all sorts of ways could be a gripping piece of art, but could a story like that be put together in a game jam timeframe?

DO Like: Strength in Numbers

This probably isn't my number one pick, but I think it has a lot of potential. It's general enough that it could be applied in a lot of ways - i.e., WHAT is numerous? - but also specific enough that it wouldn't feel like it was haphazardly slapped-on to games using it.

I think a strength of this theme is that it's open to interpretation in several dimensions. For instance, "strength in numbers" could refer to a massive army winning through sheer size, or could simply refer to a small group of people with complementary abilities. For instance, you could make:

• A puzzle game with multiple playable characters - they each have their own unique abilities, and many puzzles must be solved by cooperation; solving each puzzle requires combining their abilities smartly and sometimes rescuing trapped partners so you can add their strength to your numbers

• An idle game in a high-fantasy setting with a theme of raising bigger and bigger armies in order to conquer villages, cities, empires, continents, and then eventually the whole world as your army becomes unstoppably massive

"Numbers" can also be interpreted in a more literal way - as in, not "large quantities" but rather numbers as in numerals. I think this provides a huge opportunity for creativity - how could you make a game in which numbers are powerful? Maybe some sort of puzzle game where mathematical relationships between numbers are important somehow?