Unstable SMP Simulator is a Minecraft modpack that simplifies installing Unstable simulators, without manually choosing mods and configuring everything yourself. It comes with the necessary PvP mods pre-installed and auto-updating simulators, with separate Carpet-based and Vexbot-based versions.
In Vex-1.21.11-7.x, use Import Simulators on the world selection screen to download maps. Since version 7.3, the Import Simulators and Import Kits buttons let you get new simulators and kits without updating the modpack. Maps include Law Prison Breakout and ManePear's training simulator. Paid maps are not added.