I decided to make a FAQ to answer the most asked questions, please read this before commenting.

Q - Question
A - Answer

Q: How to download the game?
A: You cannot download this game yet, it's still in progress.
I'll let everyone know when it's done and ready to play.

Q: Where is the download link?
A: Same as above; the game's not finished yet, soon.

Q: For how long is this game in development?
A: Around a year. The progress got reset and we started over again.

Q: Will there be an android version?
A: In the future, yes. But at first, I'm going to focus on finishing the Windows version.

Q: Will it be on mac?
A: Not officially, you could probably use some kind of program to run this (.exe) but I don't promise it'll work good and smooth.

Q: Is this gonna be for Linux?
A: Same as above; You could try using Wine but I have no idea if it'll work.

Q: Is it going to be free?
A: Yes. This fan-game will always be free.

Q: Can you add controller support?
A: Of course, the game will have controller support from its first release.

Q: When will it be released?
A: As soon as possible. I expect Winter this year.

Q: Is this gonna have local co-op?
A: Most likely no.

Q: Why is it taking so long?
A: I'm using Clickteam Fusion 2.5+ as the engine for this game, and most of the things I want to achieve have not been done before/not documented so it takes some time and many extensions to make something work as I want it to. I'm basically remaking UNDERTALE's engine from zero and adding multiplayer and my own changes to it.

Q: How can I join the Discord?
A: You can join our Discord Server using this link.
(https://discord.gg/wcWbK79)
Note: You must be at least 13 to use Discord.

Q: Can you add a character maker?
A: Not a character maker, no. BUT you will be able to equip all sorts of accessories such as hats, masks or effects and particles to customize your character the way you'll love it.

Q: Is there going to be a PVP?
A: Yes, there will be PvP.

Q: how long will this game take to play?
A: As much as you want to.

Q: do I need to follow you to play this?
A: You don't have to, but it'd be appreciated.

Q: Do you need any testers?
A: For now, no.

Q: Will you update the game after it's release?
A: Yes, this game will receive many updates/bug fixes and even events after it's released.

Q: Will there be an in-game voice-chat?
A: I could add one, but why if there's already Discord, Skype, Team Speak and many others for that?

Q: What's left to do in your game?
A: For the current Alpha version, not much. I'm close to finishing.

Special thanks to @GemLP for collecting these questions for me, @Ottotinne for the pinned post, it is no longer pinned.

Thank you for reading this, hope it helped you in some way.