There is a well-known free alternative called created by Xisumavoid. This is a Bed Wars-style map set entirely underground. Cost: Free to download for Minecraft Java Edition.
Help you running the 2009 game on modern Windows. Provide a guide on how to install the Minecraft map . Tunnel Rats Review - IGN Tunnel Rats Free Download
It is widely considered one of the worst first-person shooters ever made. There is a well-known free alternative called created
If you do decide to play the 2009 version, it is highly lightweight by modern standards: useless iron sights
Features buggy combat, useless iron sights, and a "psychotic" protagonist who rants about family issues while clearing tunnels.
Most reviewers suggest avoiding it at full price unless you are a "morbidly curious" collector of bad games. The Minecraft Mini-Game