Rocketbirds 2: Evolution

Rocketbirds: Hardboiled Chicken is an adventure platform game in which the player controls Hardboiled Chicken. The player unlocks many different weapons throughout the campaign, with which they have to dispatch enemies of different ranks. The game balances brutal shootouts and puzzling elements, keeping the player alert. In the co-op campaign, two players can complete the missions together. The maps are the same as in the regular campaign, except the puzzles have to be solved in different ways as the characters are smaller and both players have to help each other to be able to progress.

Rocketbirds' single player campaign opens with Hardboiled Chicken fighting a barrage of Penguin army soldiers. His mission is to find and kill the corrupt Penguin dictator, iL Putzki, in order to set the citizens of Albatropolis free. Hardboiled's jetpack runs low on fuel during his flight, dropping him into the woods where a nearby building is being guarded by penguins. Elsewhere, Putzki himself finds out about Hardboiled's whereabouts, going into a panic until Brno Albatross, Putzki's bodyguard, ensures him that Hardboiled is only a one-man army fighting against millions.

Hardboiled soon enters the building, later getting himself trapped in a cell where he is then tortured by Brno. It is then revealed through a series of flashbacks that Hardboiled, alongside various others, had been initially captured at a young age and forced to serve for the Penguin army, after a failed attempt to cook him at birth led to him still being alive years later. The army's black star symbol was imprinted onto his head during training, where he was made to obey the dictatorial rules set by the Penguins. Hardboiled's reasoning for rebelling is implied in the third of these flashbacks, where during his time serving under Putzki, an adult Hardboiled spotted a younger chicken from Albatropolis who looked very similar to himself when he was young.

In 2000, Sian Yue Tan and James Anderson made the Flash animation Albatropolis: 'Pilot'. A parody of an 80s trend started by Teenage Mutant Ninja Turtles, the video featured chickens and penguins violently fighting against each other in a snowy field. The concept stuck around with Sian Yue for a while until he formed Ratloop Asia the same year, using the characters as a way of practicing game development. Nine years later, Rocketbirds: Revolution!

was launched online in 2009 as a browser-based game, with a free playable demo for the first chapter and the remaining ten being paid for as long as the player had an account. This early version was later nominated for three awards in the 2010 Independent Games Festival for Excellence in Audio, Excellence in Visual Art and the Seumas McNally Grand Prize, losing out only to Closure, Limbo and Monaco in each category respectively.

The PlayStation Vita version received "generally favorable reviews", while the PC and PlayStation 3 versions received "mixed or average reviews", according to the review aggregation website Metacritic.