Edit: without any account!!!
Since you are looking to play single player you might also want to check out Minetest with the Mineclone2 addon installed. It is not identical, but it is an amazing substitute and free.
https://github.com/fn2006/PollyMC - Fork of prism launcher to allow offline play without an account.
If I recall pollymc had a controversy about something that made everyone drop it for some reason, can’t recall what it was though
PolyMC (with one L) is the launcher that had the controversy. Prism Launcher was forked from PolyMC, and PollyMC (with 2 Ls) is a new project forked from Prism Launcher.
I think polymc and pollymc are two different things.
The PolyMC controversy is that one of the devs went rogue and kicked everyone else off the project, so they didn’t really have a choice but to fork. They explain what happened on the FAQ of their website.
UltimMC is good. It’s a fork of MultiMC that allows playing without account.
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I’ve never tried pollymc, but I’ve been using ultimmc for some time. So, yes, the launcher and installed java are the only things that you need for playing.
HMCL on github
Mineshafter[dot]info is what I used to use back in my cracked minecraft days. It basically provides a modified launcher that patches itself and the Minecraft JAR to look for the Mineshafter login servers instead of Microsoft’s. It lets you use singleplayer as well as multi-player on cracked servers that do not force online authentication.
The site is still up and paid for, which means someone still gives a shit about it, so I think it may still be functional. I haven’t used it in literally ten years though, so I doubt it supports the latest Minecraft versions though, but you can try it. Oh God. Ten years. I’m old…
TLauncher is also an option
TLauncher has been known to have malware and crypto miners. Please do not use TLauncher
Is there an alternative for simple modpack access? Nephew is using Tlauncher for easy mod switching
HMCL on github
its cli only but i go hard for https://github.com/gorilla-devs/ferium