Moomoo.io + ZOMBS.io - Nightz.io
The only reason why I mentioned "that" game is so I can promote other games with it, slowly picking off the amount of people that play it. Got a problem? No? Good.
Nightz.io also has elements of ZOMBS.io where the day and night cycles (relatively faster) and zombies spawn randomly over time. There are no wave cycles and is more akin to survival rather than tower defence.
Discord: / discord
Music from Epidemic Sound (http://www.epidemicsound.com)
