PvZ's real plants and zombies become random encounters across Undertale's Underground. Dodge peas, ACT, spare a Wall-nut.
Walk through Undertale and run into Plants vs. Zombies: Game of the Year's real plants and zombies. They're drawn from your own copy of PvZ and mixed into Undertale's random encounters, about half of all encounters.
15 PvZ enemies across the Underground
Real Undertale battles. FIGHT, ACT, ITEM and MERCY all work as usual. Every enemy has its own ACTs: Water the Peashooter, Feed the Chomper, Tap the Buckethead's bucket, talk to each of Threepeater's heads. Do the right ones and you can spare it, or fight it and watch it turn to dust.
PvZ attacks in the bullet box. Rows of peas, lobbed cabbages, a rolling Wall-nut, falling cones, bouncing buckets, Chomper lunges, Squash slams, Jalapeno fire and Jack-in-the-Box shrapnel.
Undertale music, PvZ sound effects. Undertale's battle music keeps playing. The hits, groans, chomps and splats come from PvZ.
Your saves stay safe. The mod plays from its own copy of Undertale's game data and keeps its own save folder. The first time it runs, it copies your existing Undertale save so you can carry on where you are.
Single player. Needs Undertale and Plants vs. Zombies: Game of the Year (both on PC). The first launch takes about a minute to draw the sprites and build the mod's copy of Undertale.