The Pen MC is a classic prison server that feels like the 2014 era. It is barebones and grindy on purpose. There is no instant selling and you are not running around with crazy overpowered armor.

Money takes work here. You mine and you smelt your ores yourself. To sell you have to travel and deal with pvp zones so it can get sketchy.

Rank up from A through H and then reach Parole. After you finish the main ranks you can prestige and you can pick how you want to progress. You can keep doing the classic mining grind or use the custom fishing system. There is also a mob arena with waves and boss fights. There is a cookie farming bakery system too where you farm wheat and cocoa then bake cookies with custom mechanics and do long term quests and compete on leaderboards.

There are guards enforcing contraband rules and illegal crops that are high risk and high reward. You can rent cells and plots. There is an auction house bounties player shops solitary confinement and parkour challenges. The server also says anything you can buy can be earned by playing so it is focused on long term progression not instant wins.