I dunno how you managed to do that in 24h... with collision detection and all.

Collision detection for something like that is rather easy actually, it's literally just check against a 2D array. This thing has about the same physics and I took like 10 minutes to code that part, and I could probably have done it faster if I had tried.

As for the original topic, I haven't coded any tetris games, so =/ There are some weird tetris games though, like Glasnos 3 on DOS (the grid is turned 90º so pieces fall to the right, not all pieces have standard shapes and there are also items you can get to increase the score, get weapons and such). There's also Tetris Deluxe which doesn't really have anything unusual (besides maybe allowing to use non-standard pieces), but it's amusing in that it uses text mode with custom graphics (it has hi-res graphics on a 4.77MHz 8088, take your guess =P).

I've made this 3d tetris 10 years ago . It even have an AI that play when you don't do anything on the start menu for 15 seconds.

damn, that is epic!

edit: i've written one tetris game, when i was learning PS1Light for the ps3, and using the rsx, it was in no way unique, or anything, just regular old home-brew tetris:

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Found the project for Unis, here you go :)

Download from here

I've made this 3d tetris 10 years ago . It even have an AI that play when you don't do anything on the start menu for 15 seconds.

You need to put that game on every available mobile, tablet, and console possible and Be Rich B****h!TM