b20150205cuttingedge

An experimental version from 2015 that disables the DirectX renderer and switches to .NET 4

b20150203.7

An early version from 2015

b20150101cuttingedge

The first version of 2015

b20141222.6cuttingedge

A christmas-themed version from 2014

b20141206cuttingedge

A 2014 triangles build, with a little easter egg

b20141109.14cuttingedge

A version from 2014 with customizable triangles! (Try to drag an image into the game)

b20141106.14

Yet another version from 2014

b20140909.7cuttingedge

The same version as b20140909.11cuttingedge, without the UI update

b20140909.11cuttingedge

A test build from late 2014, with a very nice UI

b20140616.test

One of the earliest versions to support decimal AR, OD, CS values

b20140323.3

The first version with the new settings menu

b20140127

The version before the new settings menu was added

b20131129.1

The first version with global background dim, and hit error bar

b20130606.1

A build from 2013 with the new UI overhaul update

b20130303

This is the last build before 2013's UI overhaul update.

b20121223

A build from 2012

b20121003shine.test

The first version to add osu!mania

b20120916

Another build from 2012

b20120529

A build from mid-2012

b20120522

Another build from 2012

b1844.test

A build that was used to test the osz2 file format

b1821

The first archived build from 2012

b1818

The last build from 2011

b1815

One of the 3 archived builds from 2011

b1814

b1704

The last build of 2010

b1700

A great build for modding ;)

b1652

This is the first build to have split AR and OD

b1596

A build from 2010

b1553

Another build from 2010

b1218

A version from early 2010

b1122

Latest available build from 2009

b1077a

This is the first version of osu! with proper widescreen support

b904

A build from 2009 that is used in the oldsu server

b833

This version has a very early and buggy implementation of widescreen

b753c

A build from 2009 that added local rankings

b699

nice?

b595b

Another build from 2009

b504

The first version of osu! with catch the beat support

b497

This version of osu! adds a new song select style and the first version of osu!direct

b476

A build from 2008 with very early support for Catch the Beat

b452

A very early OpenGL build, that also features work-in-progress sliders

b420

A build from 2008, the first public build featuring the Auto and SpunOut mods

b394a

A build from 2008 that oldsu used in the past

b337

Probably the earliest version with multiplayer support that was archived