The Japanese mobile/browser game Nouen Hokkoriina (Farm Hokkorina) by Mobage is currently running an event featuring Osamu Tezuka's characters! Items with Atom, Leo, and Unico will be available from June 4th to June 14th.

Nouen Hokkoriina allows you to grow your own farm and take care of it. The game always has special events so you can collect unique items for your farm.

Source:
- 野菜や動物を育てて遊ぶ農園ゲーム「農園ホッコリーナ」に手塚キャラが登場！｜虫ん坊｜手塚治虫 TEZUKA OSAMU OFFICIAL