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Game Description

Black Monday is a fast Arena Brawler for three to four players on a local screen. The focus is on action, timing and tactical Decision making. Over multiple rounds the question is: Who is be a millionaire.

In every round the players set their bets on another player or on themselves. In the arena they have to react quickly and take the right tactical move in order to manipulate the outcome of their own bet.


“Black Monday takes place in a far future, four concerns own the global economy. Entertainment and work are complete fused and as a result the Stakeholder Arenas were made on concerns rooftops. Large companies invest millions in the comerz-sport, while the gladiators fight over every electronic coin with bombs and modern technology. Can there be any cooperation in this world?”

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Heartbeat from Black Monday


Since our last post we have been very busy working on our bachelor project Black Monday. We had to write a documentation and wanted to post every now and then about our progress, but you know how things can go... messy :) There was just too much to do, game design & writing the bachelor thesis / documentation aaaand having a life next to it.

But hey here we are: Black Monday

Black Monday is a collaborative bet and arena brawler. The players set bets on them self or their fellow players. They manipulate the outcome of their bet in an awesome arena battle. Even through losing the battle they can win the game and earn the most money to be the millionaire.


• Innovative bet mechanics

Black Monday Screensthos

• Play with or against your friends and earn sparkly money

Black Monday Screensthos

Black Monday Screensthos

• Great text based level creator (we created our own font, so we can make level design via texteditor)

Tile Symbol

• Bombs, many Bombs :)

Black Monday Screensthos

Try it for yourself, check out the builds (mac / windows) in the download section and let us know what you think.

Focus in Space

Focus in Space


How do you get players to see what you want? I'm going to point out different aspects that should help us with that task.

Experimentations on the Micro Mechanics

Experimentations on the Micro Mechanics


First experimentations on the Micro Mechanics in the arena.

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Black Monday 050615 Mac

Black Monday 050615 Mac


It's the build of 05.06.2015 the bachelor version.

Black Monday 050615 Windows

Black Monday 050615 Windows

Demo 1 comment

It's the build of 05.06.2015 the bachelor version.

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Black Monday
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Aug 18 2019

RT @DeruGame: Enjoy #gaming twice as much! DERU -The #Art of #Cooperation is on #Sale! #PlayTogether ๐Ÿ‘ซ on the #NintendoSwitchโ€ฆ T.co

Feb 15 2019

RT @DeruGame: One week since our launch!! To celebrate that, we now have our background set on our website:โ€ฆ T.co

Nov 15 2018

RT @DeruGame: We are currently streaming DERU here: Store.steampowered.com #indiegame #steam #streaming #gaming #swissgames T.co

Nov 10 2018

RT @DomdomHaas: Hey #gamers @DeruGame is being streamed check it out here: Buff.ly #gaming #indiegame T.co

Nov 7 2018

RT @DeruGame: DERU - The Art of Cooperation will release on November 7th โšซ+โ–ณ everybody ๐Ÿ‘ฎโ€โ™€๏ธ๐Ÿ‘จโ€๐Ÿš’๐Ÿ‘ฉโ€๐Ÿญ๐Ÿ‘ฉโ€๐ŸŒพ๐Ÿ‘จโ€๐Ÿณ๐Ÿ‘ฉโ€๐ŸŽ“๐Ÿ‘ฎโ€โ™‚๏ธ๐Ÿ‘จโ€๐Ÿ‘ฆ๐Ÿ‘จโ€๐Ÿ’ผ๐Ÿ‘จโ€๐Ÿš€๐Ÿ‘ฉโ€๐Ÿ”ฌโ€ฆ T.co

Oct 19 2018

RT @DomdomHaas: Add the co-op beauty @DeruGame to your wishlist, because the #release is coming -> Store.steampowered.com #gamingโ€ฆ T.co

Aug 30 2018

RT @DomdomHaas: Yeeees, this super Artwork of the @derugame is available via The-art-of-games.de #Gamescom18 #indiegameโ€ฆ T.co

Aug 30 2018

RT @FARtheGame: OUT NOW on Steam, GOG and the Humble Store! | Get it on Steam: Store.steampowered.com | Get it on GOG:โ€ฆ T.co

May 18 2018

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Apr 19 2018

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Black Monday
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