GPTris

GPTris is a falling-block puzzle game written in QuickBASIC. Instead of clearing full lines, you build the tetromino shown under TARGET, with the next targets listed below it; the queue holds every normal tetromino in every rotation, with squares appearing four times as often as a normal orientation and each straight-bar orientation twice as often. Clearing a target is worth 100 points, several targets at once multiply the award, and a target that already exists on the board after the queue advances clears as a combo, doubling the award at each level of the chain. Some falling pieces have a gray half: a mixed match scores normally but leaves its gray blocks behind, while a target made entirely of gray blocks clears completely; the chance of a gray half starts at 5 percent and rises with every landed piece to a maximum of 75 percent. The three best scores are saved to a file. The developer, benamas, says they decided to vibe-code the game on a Wednesday evening, that the game design was theirs but GPT 5.4 Sol wrote every line of the code, and that GPT also wrote the rest of the README. Free on itch.io as a Windows executable compiled with QB64, with the QuickBASIC source under the Unlicense.