Wow you weren't kidding when you said you took a spin on an existing concept.
Really like how you applied whether a tile is true or false. Made me double check and actually problem solve instead of running straight through the level.
Some feedback though, the signs "TRUE / LIE" can be unclear at times, as sometimes it is not obvious as to what tile they are pointing to. You might want to use something more obvious like a color overlay on tiles or putting the sign directly on tiles, rather than having the sign point tiles. Also the game could use some sound.
Other than that really fun game. Cya on the fireside discord and good luck in the jam :>