In this game, the main mechanic is to make magic by actually writing the magical words with the right syntax. Kinda like a programming language, but programming magic.
The general idea is that the players start with one school available and some words, and then learn new words as he progresses through the dungeon (like items in typical roguelikes). They will be buzzwords like "uzzok" and "prec," but after studied by the character (in-game action), they will reveal the meaning. The player start with a book in inventory detailing the grammar of the school they have and all the magic words. You see, you have words for things like Target (self, area, etc), Elements (fire, water, negative, etc), Schools (Evocation, Conjuration, etc - though for the 7drl I only managed to implement one school, evocation), and so on, and so on.
Then the player on his turn can write an incantation, hit enter, and see the results. Like, if it's Evocation Fire Front it would evoke a jet of fire in the "front" direction. If it is Evocation Negative Front Distance Distance Explosion it will evoke a jet of negative energy in the front direction that goes on for two extra tiles and then explodes.
It's up, playable on Windows and Linux, at https://lenon-kramer.itch.io/of-mist-and-shadows