π² Games
Interactive manga: The Expression Amrilato is the story of two girls intertwined by through their fumbling efforts to communicate. You learn a new language (guess which one) by playing. It also has a sequel called Distant MemoraΔ΅o.
Playable in Esperanto: the Steam list Ludoj en Esperanto tracks which games in the platform can be set to Esperanto.
Minecraft server: EsperoNova is a Minecraft server for Esperantists. Only Esperanto can be used in the public chat.
Simple indie games: you can find many on Itch, most of them free, or in the "pay what you can" model.
Text-based adventure: La Kongreso is a hilarious text-based RPG, set during an Esperanto convention.
Deduction puzzle: Kodludo is a game where you have to guess a secret code based on deduction.
Strategy game: Freeciv is an open-source game similar to the Civilization series. You can set the game's language to Esperanto, and choose "Esperants" as your civilization.
Word guessing games: Ba Ba Dum (also mentioned here) has four different games where you have to match pictures and their related Esperanto words.
Wordle clones: Wordleo is an Esperanto version of the famous word guessing game wordle. Another take on the concept is Vortjo.