November has been Worldwide Bereaved Siblings Month. In observation of it, I'm sharing an online game that both my kids created together in 2011 when they were 10 and 12. Gamestar Mechanic may have been the first site Rader (known there as minimario) used to make video games. "Teen VS. Thief" is a five-chapter storytelling game following a teenage detective. It’s a long game, and I haven’t played through all the chapters (I’m pretty terrible at the keyboard-based controls). But it’s fun to see how the kids combined their talents to bring their idea to life.
Also, for anyone who wants to read more on the topic (perhaps you've lost a sibling yourself?), please read this wonderful article from What's Your Grief about bereaved siblings, who could be considered "the forgotten mourners."