Aquagrid is a relaxed underwater VR puzzle game in which the player builds and optimizes an underwater station. The station consists of modules that can have one of three colours (RGB).

Every module has a shape outside of it. This shape has to be filled with other modules. If the shape of a module is filled completely, the module can be activated. It then illuminates all modules within its shape in its own colour. Illuminated modules give the player points. If two different colours overlap in one module, the colours mix additively and give even more points. The same colour can not overlap in one module twice.

The game is separated into multiple levels that get more complex as the player progresses. To get to the next level, the player has to get over a score threshold with a limited amount of modules and module-replacements.