In Hungry Hal, there are three lanes laden with traps that you run down horizontally. Hitting these traps slows you for a few seconds and lowers your hunger meter. Obviously, when your hunger meter empties, you're dead—for real this time. To replenish it, you chase down people trying to escape the zombie apocalypse and feast upon their grey matter.
Attacking a person takes their brain as they let out a funny death cry. As you advance further in the level, the people will launch into a dead sprint to get away, letting out another funny sound. More obstacles get in the way of your feast the further you go, making the game more difficult but giving a rewarding feeling as you climb the leader boards. The game's only substantial set back is the one shared by most endless runners; once the competitive aspect fades, the game becomes repetitive. However, until it does, it's a fun and engaging way to pass the time.
Overall, I give Hungry Hal a 4/5. It sticks well to its theme of a zombie apocalypse, manages to make it funny, and has simple controls with increasingly challenging game play. I recommend giving it a try and let me know what you think about it.