20euros alternatives and similar software solutions

Based on the "Games" category.
Alternatively, view 20euros alternatives based on common mentions on social networks and blogs.

Mindustry

9.6 9.9 20euros VS Mindustry

The automation tower defense RTS
Lila

9.3 10.0 20euros VS Lila

DISCONTINUED. ♞ lichess.org: the forever free, adless and open source chess server ♞ [Moved to: https://github.com/lichess-org/lila]

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Minetest

9.0 9.9 20euros VS Minetest

Luanti (formerly Minetest) is an open source voxel game-creation platform with easy modding and game creation
A Dark Room

8.6 0.8 L2 20euros VS A Dark Room

A Dark Room - A Minimalist Text Adventure
Agar.IO Clone

8.2 0.0 L3 20euros VS Agar.IO Clone

DISCONTINUED. Agar.io clone written with Socket.IO and HTML5 canvas
The Battle for Wesnoth

8.2 9.9 20euros VS The Battle for Wesnoth

An open source, turn-based strategy game with a high fantasy theme.
untrusted

7.8 4.1 L4 20euros VS untrusted

A meta-JavaScript adventure game by Alex Nisnevich and Greg Shuflin.
Clumsy Bird

7.6 0.0 20euros VS Clumsy Bird

DISCONTINUED. A MelonJS port of the famous Flappy Bird Game.
Hextris

7.2 0.0 L1 20euros VS Hextris

Fast paced HTML5 puzzle game inspired by Tetris!
Teeworlds

7.0 7.3 20euros VS Teeworlds

A retro multiplayer shooter
elevatorsaga

6.6 0.0 20euros VS elevatorsaga

The elevator programming game!
0hh1

6.3 0.0 20euros VS 0hh1

DISCONTINUED. A lovely little logic game by Q42.
Spyfall

5.2 5.5 20euros VS Spyfall

DISCONTINUED. Fan made web version of the Spyfall party game.
Posio

4.4 4.3 L5 20euros VS Posio

A multiplayer geography game using Websockets
SourceBans++

4.3 8.0 20euros VS SourceBans++

Admin, ban, and comms management system for the Source engine
RconCli

4.1 3.6 20euros VS RconCli

RCON client for executing queries on game server.
TournamentMango

3.2 0.8 L5 20euros VS TournamentMango

DISCONTINUED. TournamentMango is an open source tournament bracket and user management system. You can build an archive of players and keep track of all their scores over time as well as their regular characters, games, and aliases.
node-virtual-gamepads

3.1 5.0 20euros VS node-virtual-gamepads

Node virtual gamepads
piqueserver

3.1 6.8 20euros VS piqueserver

An Ace of Spades 0.75 server based on PySnip.
Quizmaster

3.0 5.1 20euros VS Quizmaster

A web-app for conducting a quiz over the internet
Legend of the Green Dragon

2.6 0.0 20euros VS Legend of the Green Dragon

Core functionality for Legend of the Green Dragon, a text-based RPG game.
QuakeJS

2.2 3.5 20euros VS QuakeJS

Fork of inolen/quakejs with additonal content server, local play page, and start-stop script
ASFclaim

1.9 7.9 20euros VS ASFclaim

🎮 Claim free steam games using ASF
Net64+

1.7 0.0 20euros VS Net64+

Net64 aka SM64O allows playing Super Mario 64 in an online multiplayer mode. Net64+ is the official continuation of the program and features an integrated server list.
battlecraft

1.4 0.0 20euros VS battlecraft

DISCONTINUED. A fully distributed multiplayer browser game.
Cubiks-2048

1.2 0.0 20euros VS Cubiks-2048

Game: Create the number 2048. Cubes with same number merge!