BlackBerry developers have one more chance to earn $100 per app successfully submitted to BlackBerry App World during RIM's final 'port-a-thon', an event designed to encourage developers to make their apps work on the soon-to-launch BlackBerry 10 operating system.
The online event begins at 16:00GMT on Friday., it is intended to run for 36 hours.
Developers can use any development tools to create their apps, including the automated BlackBerry App Generator, which simply requires entering an RSS feed and adding a logo for the most basic of apps.
In exchange for making apps compatible with BlackBerry 10, devs will receive $100 per eligible app submitted to the store during the port-a-thon, up to a maximum of 20 paid apps per vendor. Submitting more than five also means developers end up in a draw for one of 250.
RIM said a total of $500,000 is available as part of the reward programme.
Its last port-a-thon overran by an hour and a half but resulted in more than 15,000 additional app submissions to the App World Store. BlackBerry 10 is set to launch on 30 January.