PopCap has announced that all their iOS games, like Bejeweled, Bookworm, Chuzzle, Peggle, and Plants vs. Zombies, are getting a price drop for 48 hours to raise funds for Japan’s earthquake crisis.

Partnering with Red Cross, PopCap will donate all of its revenues from the sales, which begin Saturday March 19 at 12:01AM PDT and ends midnight PDT on Sunday March 20. iPhone games will be 99 cents while iPad games will be $1.99.
Sega has also put some of its apps, including Street Fighter IV, on sale for just 99 cents. Everything from the sale will go to the relief effort for earthquake victims via the Red Cross.

ChatTime, the iPhone app that allows you to make calls through your iDevices, has announced that for the rest of the month, all calls to Japan from the app are completely free, which a similar move is made by both US carriers AT&T and Verizon. Of course, ChatTime allows you to call internationally from anywhere.

Gaming may be the last thing that you’d want to do in such situation, and certainly you shouldn’t be moved to donate just because of a free game, but it’s still a good effort to push more people into donating.

If you already have these apps, or don’t want to buy any apps, and still wish to donate, do head over to RedCross’s website.