There’s tons of documentation online about the SRS “Super Rotation System” outlining block rotation behaviour in modern Tetris games and knock-off clones, enough for anyone to technically make their own.
Popular knock-off game Tetr.io comes to mind, for instance.
I think a Tower themed Tetris clone would fit in perfectly in the arcade, modes such as 40-line sprint, 150 line marathon with gradually increasing speed and 1v1 multiplayer duels would add variety and scoreboard options.
An endless ‘zen’ mode sort of like Planetary Piano’s endless mode too, perhaps.
Some people also like a ‘classic’ mode featuring true RNG with pieces (no bag shuffle system) and no sliding pieces or ‘kicking’ them.
The general rule of thumb when it comes to knock-off tetris clones appears to be just not using the name-sake, calling blocks ‘tetriminoes’ or referring to a 4-line clear as a ‘tetris’. Knockoff games generally just call them ‘blocks’ and 4-line clears ‘quad’ or ‘tetra’. There’s plenty options.
I’m including some links to the documentation on modern tetris’ Super Rotation System as people have already done the heavy lifting in regards to figuring that all out; SRS | Tetris Wiki | Fandom
Aside from plugging in all that rotation data, a ‘7-bag’ system is needed. Put simply, you take all 7 pieces, shuffle them, then deal them out to the player, once that set of all 7 pieces is used, you shuffle it again, this prevents streaks of the same block over and over or a drought for a particular piece type.
There’s other nuances like how much you can slide/rotate a piece before it locks in place, the delay of no action before a piece locks in, how pieces ‘kick’ off walls when rotated in tight spaces, etc. There’s tons of information surrounding modern tetris systems and rules floating around that I think, coding work aside, it could be a relatively easy addition with a Tower theme to keep it legally distinct.
More advanced players typically like being able to adjust their controls with things like DAS (delayed auto shift), ARR (auto repeat rate) and so-on, though that might require more work to set up so it remembers peoples’ settings.