- This is bad Tetris. It's hateful Tetris. It's Tetris according to the evil AI from "I Have No Mouth And I Must Scream".
—qntm.org/hatetris
Hatetris (AKA HATETRIS) is the Tetris game that hates you. It will always throw the worst possible piece. (Etymology: "Hate" + "Tetris".[1])
Its top out condition is a partial lock out, as any part of a piece at 21 or higher will cause a gameover. The replay passcode is usually a long series of Chinese Unicode characters; a replay passcode can range from approximately 12 to 224 characters in length.
Tetriminoes spawn at 22 and 23, and the playfield is 24 rows high. The four extra rows are visible. Pressing space will revert to the original spawn location.
Link: https://qntm.org/files/hatetris/hatetris.html
Undo and blocks
Unlike most games, this game has an undo function. This is useful if you make a mistake somewhere. There is no next piece or hold piece. This game has the following tetrominoes:
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Starting board:
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Example board (in real life scale):
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Gravity
This game has 0G gravity. This means that tetriminoes will not drop unless you press the down key. Lock delay is affected as well, so if you want to drop it and set it, press down twice. This game has no hard drop.
Rotation system
Like other fangames, this game has a unique rotation system. There are no wallkicks.
The tetrominoes appear to rotate on the intersection of gridlines. Pieces only rotate clockwise.
High score
The highest score listed is 31 (passcode: "௨ഖƌݯߜࠏІWƑsໃa௨೯ܘݷಳජଈیԪؼʥݺԥඞܘݲࠐڄໂঅமةໃݹ௧ړІٽ௨൞ໃZ௨ಘІܥࠐΣІZߜටȜখذජНݹߛeʛݹߤปເѧ௩ԚໂՉࢸටuа௨સȣݷłقෆঅਏeܘԔצقషݸɢڠຜঀಧҸມѧஐට༪൩ԊಅഫܡथsถԡԦԚໃɥஸقࡈɕɠɈไݸצقషݰਵϺФঅஓػݐɓԞуຯɕझࡈ๐ݞझࢶІݞमปദஈƉؿଭݪஸҩЂ൸ԛمϦGƁҨVھԥචЅշࡂ෮लݷƘණ໘ࠅƘಧНקࢻҨฆӘದԋϝପࠑ੧ͳݲடփරݞਵΚϼɢԒԺٳѦԤࠌξGಘسਯܥஶҋϮτथlϼʔ"), dated to 2017-06-06.[1]