SIMA author here - SIMA is betting on simulations and games. We use real-world open-ended language, but games/sim obviously have simplified physics/graphics.

In terms of alternative strategies, Google DeepMind also has an amazing robotics team with lots of fantastic work for real-world robotics - including multi-robot generalists, showing positive effects when co-training one agent or model on multiple environments/bodies. Their prior work was very inspirational to us in SIMA! https://deepmind.google/discover/blog/scaling-up-learning-ac...