The best alternatives to Loco Looper are Sock Swag, Ordinary Puzzles, and Puzzle Club. If these 3 options don't work for you, we've listed a few more alternatives below.
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AssemblyAI— Speech-to-Text API with superhuman accuracy
Ordinary Puzzles is a web, iOS, and Android mobile puzzle game inspired by Picross and Sudoku. Each puzzle has a single solution and can be solved through logical deduction alone: no trial and error needed. Ordinary Puzzles is free and open-source.
In Puzzle Club you compete with other players by creating and solving puzzles. There are 18 game mechanics and 200 basic puzzles. To be on top of the global leaderboard, you need Victory Points, which can be earned by solving puzzles, created by other players.