Cute little game! It's a funny twist to not eat humans, but throw them in a hole ^^. I liked your little universe, the concept of a "human farm managed by zombies" is something I would love to see expanded upon (storywise, not in real life xD).
The graphics are cute and, gosh, you have a character selection screen. Who makes a character selection with multiple skins in a 7-days jam, you madman xD.
The gameplay is simple, but quite fun. I enjoyed the concept, and spent a good chunk of time chasing the humans =p. But it is maybe a bit too easy. I had to stop playing because the game never ended: throwing people in the hole gained more time that it took me to chase them, resulting in an endless loop xD. I would have liked some obstacles, maybe some SWAT-like humans that knocks you, even empty-handed, to make you lose time, and the longer the game, the more there are? I don't know, but the difficulty curve needs to go higher ^^.
The sound design is hilarious! I really appreciate the little voices, even though the high-pitched screams were maybe a bit too present. It is just a question of fine-tuning, but I would make them a bit less frequent, and maybe randomize the pitch a little bit, so it's never the same voice (it is a value to set in Unity AudioClips, so not a big timeloss in a game jam =D). But hey, that's still a very nice attention to sound design, and I love to see that much care to it, it is rare in jam games.
Overall, that's a quite good entry! Of course, there are some little tweaks possible here and there, but for me, that's what jams are for: finding little ways to improve our game making skills ^^. But that doesn't hide the fact that it's a nice concept that I had fun playing with, so congratulations =)!