Gate9’s medieval puzzler Dragon Town is free for a limited time. Dragon Town gives players a limited amount of space to build their town while they do battle with an evil dragon. The game boasts ten different kinds of base units. By building certain units together into combinations, players will be able to create better units. The more powerful the unit, the more points players will earn.
There are over a thousand possible combinations, so feel free to experiment. No word on how long “a limited time” exactly means, so be sure to snag a copy of Dragon Town on the iTunes App Store here.