windows
City Planning for Idiots (Tristan Dahl)
"Sim City had a baby with a Tetris" - Author's description Download on itch.io (Windows, Mac, Linux, Android)
tetris
browser
Lemmtris (movAX13h)
"Goal is to get the Lemming to the small green tree (to the next screen)." - Author's description Play here (Browser) [Via @lexaloffle]
browser
TETRONG (Daniël Haazen)
"PONG mixed with TETRIS gets you TETRONG" - Author's description Play here (Browser) [Via @Sheepolution]
freeware
Triangulis (Will Smith)
"a game where the four arrangements of triangles fall from the top and you try to position them as best as you can." - Author's description Download on itch.io (Windows, Mac, Linux) [Via @minkcv]
windows
Tetroid (Ian O'Dea, Caleb Eberhardt)
"The central mechanic of the game is a twist on Samus' blaster, which now fires Tetris blocks that not only hurt enemies but also have a degree of persistence to them." - Author's description Download on itch.io (Windows, Mac)
windows
ソクリス (R@bit, Mimi)
"[遊び方] 左右キーでブロックを移動 スペースキーでブロックを回転 下キーでブロックを高速落下 上キーで次のブロックを切り替え ※ 一定ライン数を消してレベルが上がると、いろんなことが起こります...。 ※ 上キーを長押しすると、次ブロック固定を ON / OFF できます。" - Author's description Play here (Browser)
windows
Hieronytris (Pedro Paiva)
"Today I am publishing one more game, the Hieronytris. The game is based on portion corresponding to the hell one of the famous triptychs by Hieronymus Bosch. The mechanics is Tetris." - Author's description Download here (Windows)