What a lovely game. The vibe here goes from Mario to Ice Climbers to Metroid. A very simple platforming mechanic in hovering, with some really cleverly crafted levels. The character art is really wonderful.
The controls are tight and the jumping/hovering is precise. My favorite touch is the tactile feel of hitting walls and landing from jumps with a bit of landing lag like in Castlevania. It's responsive and very retro. Really well done!