Hail to the Chimp is a political satire/party game similar to the Mario Party series. In the "Animal Kingdom", the King Lion has disappeared after being implicated in scandals and animals demand a new king by holding an election. The election becomes stalemate, leading Clams, the lowest form of animals, to decide on a candidate.
The gameplay mostly consists of competing on themed party boards, collecting clams to score points and raise vote counts while avoiding obstacles and attacks from rival opponents. Results are shown in a news-themed stats screen, presenting overall stats by animal newscasters like Woodchuck Chumley. Players can form alliances after stages and recruit rivals to help them later, only turning against them afterwards.
There are ten animals to choose from in multiplayer mode, with four human opponents competing against each other. In the single-player "Campaign" mode, players compete in ten stages, each themed for a certain animal, completing specific events for that character. There are also four opponents during the campaign mode, but with three CPU opponents instead of humans.