Gin Rummy by Melele is a classic card game brought to your Android device. The game allows you to play against the CPU and comes with a four-color deck, including a help and play explanation. The settings are customizable, with options such as cards size, deck type, cards back color, sound, animations, speed, scoreboard, and table color. The game also includes scores for hands, matches, best and worst, and achievements to earn experience points. Players can save and load games and switch between landscape and vertical orientation.

In Gin Rummy, the objective is to score points and reach 100 or more points before your opponent. Each turn, a player must draw either the top card of the discard pile or the top card from the stockpile and discard one card from their hand onto the discard pile. Players alternate taking turns until one player ends the round by knocking or going Gin. The game also allows players to change some rules, such as hand beginning player, receive 11 cards or a turned-up card, bonus for going Gin, and bonus for an undercut.

Overall, Gin Rummy is a great option for those who enjoy classic card games and want to play on their Android device. The game is easy to use, with clear instructions and customizable settings.