The source code from mineplex 2018 leak with commit history dating back to 2014, it requires a lengthy setup to get functional but is a reasonably easy compile if you know what your doing just have to repatch the spigot

Chiss bf4dc35b5f Added pig Game ... added squid game added recharged skill event		2013-09-23 15:48:35 +10:00
Maps	Bob wants to play!	2013-08-29 15:55:49 +10:00
Plugins	Added pig Game	2013-09-23 15:48:35 +10:00
TestApps/LOCTester	Initial Commit	2013-08-27 08:14:08 -07:00
TexturePack	Initial Commit	2013-08-27 08:14:08 -07:00
Webserver/ServerHandler	Initial Commit	2013-08-27 08:14:08 -07:00
Website	Updated to 1.6.4	2013-09-20 01:50:56 -07:00