View source for 21 April

<noinclude>{{Calendar|April}}</noinclude>

*'''2011''' – Customer Support update: [[Update:Jagex Wins Queen’s Award for Enterprise|Jagex Wins Queen’s Award for Enterprise]]
*'''2011''' – Customer Support update: [[Update:New Jagex Store Items|New Jagex Store Items]]
*'''2011''' – Website update: [[Update:Guaranteed Content Poll: Boss Rematch? - Part III|Guaranteed Content Poll: Boss Rematch? - Part III]]
*'''2010''' – Game update: [[Update:Slayer Challenges|Slayer Challenges]]<noinclude>
**[[Update:Patch Notes (21 April 2010)|Patch Notes]]</noinclude>
*'''2009''' – Game update: ''[[Update:Tale of the Muspah|Tale of the Muspah]]'' is released<noinclude>
**[[Update:Patch Notes (21 April 2009)|Patch Notes]]</noinclude>

<noinclude>{{Timeline}}</noinclude>