Squid Gem is a free Android game developed by davidliuppp. It is a great option for those who want to spend their free time on a fun and challenging brain-training game. The game has a simple yet engaging interface that allows players to focus on the game's main objective, which is to challenge oneself to beat their high score.

One of the best things about Squid Gem is that it has no time limit. Players can take their time to plan their moves and strategize without feeling rushed. The game also offers magic props that players can use in times of crisis to help them get through difficult levels. Overall, Squid Gem is a great option for those who are looking for a fun and challenging brain-training game to play in their free time.