Top games that last about a half-hour tagged Open Source

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Mindustry

The automation tower defense game

Anuke

Strategy

GIF

OpenRA

Recreates the classic Command & Conquer titles with a Free/Libre engine.

OpenRA developers

Strategy

OpenHV

Open Source Pixelart Sci-Fi Real Time Strategy Game

OpenHV developers

Strategy

Marble Marcher

A Fractal Racing Game

CodeParade

Racing

Shadows Behind The Throne 2

A grand strategy game, revolving around political intrigue and ancient evils

BobbyTwoHands

Strategy

Nanosaur

Send dinosaur eggs to the future before a meteor hits the Earth!

Action

90s era golf, with network play

fallahn

Sports

Our Personal Space

Sci-fi relationship simulation - can your space colony and your love survive?

Metasepia Games

Visual Novel

A Palace for Fools

Yet another metroidvania & platformer/shooter.

Jani Nykänen

Platformer

Play in browser

Ultimate Tic-tac-toe: New Rules

A tic-tac-toe within a tic-tac-toe

Skeptim

Puzzle

Play in browser

Epicinium

Strategy game with simultaneous turns where nature is a finite resource

A Bunch of Hacks

Strategy

GIF

Ben Was Assimilated

A hack n slash where you can run around, kill bad guys and get assimilated.

EAtkin

Adventure

Play in browser

Otto Matic

Save Earth from the clutches of The Giant Brain from Planet X!

Iliyas Jorio

Adventure

Fire & Fondness 2

A puzzle game featuring romance, explosions, and daytime television.

JohnGabrielUK

Puzzle

Play in browser

SAPROPHYTE

It learns. It WILL find you.

CURSED BOOTLEG INC

Survival

GIF

Candy Wrapper

20 Levels of Screen-Wrapping Arcade Action!

HHoney Software

Platformer

Play in browser

GIF

Tiny Tactics

Strategy turn-based combat in 64 pixels!

Team Potato

Strategy

Play in browser

Bugdom 2

Track down the Bully Bee and get your knapsack back!

Iliyas Jorio

Adventure

Taisei Project

Open-source Touhou fangame

Akari

Shooter

Data Lion

Short visual novel with a lion protagonist

Caveboy Tup

Visual Novel

Space to Grow

$3.99

What kind of a dad and farmer will you be?

Metasepia Games

Visual Novel

Hollow Dungeon (Demo)

Open-source Hollow Knight reimplementation via SPD engine.

QuasiStellar

Adventure

Warzone 2100

Command the forces of The Project in a battle to rebuild the world.

Warzone 2100 Project

Strategy

Nitrovista v1.0.1 Beta

Jreo

Racing

Aerofoil

Port of Glider PRO, the classic Macintosh paper airplane game

Gale Force Games

Action

Play in browser

Roboden

An indirect control real-time strategy game about robot colonies

Iskander (quasilyte)

Strategy

Play in browser

Remember Mary

A surreal squigglevision adventure about Mary and her friends.

EAtkin

Interactive Fiction

Play in browser

GIF

The Midnight Dance

As if an answer to his prayers, a stranger shows up on his balcony.

Oishii

Visual Novel

De Spelunca Ex Elementis

A little 8-bit MetroidVania

Scario88

Platformer

FODA

Fight over dat Ancient - Free to play browser card game

racascou

Card Game

Play in browser

INJECTION

Python programming puzzle game

TOASTEngineer

Puzzle

Open Star Fighter

An open source space fighter pilot game

thelastflapjack

Shooter

MASMZE-3D

A game written in x86 Assembly.

GreatCorn

Dead Ascend

A 2D point'n'click-like adventure game written in Qt/QML and Javascript

Black Grain

Adventure

Berry

A metroidvania platformer about a spider

ProjectESPider

Action

Initium

One of the best MMORPGs to play while at work/school.

universeprojects

Role Playing

Play in browser

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that last about a half-hour tagged Open Source (151 results)