Photo credit: BBC
BBC Bitesize has developed some fun games to help students learn about food chains. These are set up in different ecosystems (woodland, savannah, & tundra). Students select plants, herbivores, carnivores, and omnivores to complete the food chain. The plants may be tricky to find, as I only found blackberries, and an oak tree in the woodland challenge.
Food Chain Challenge: Woodland
Food Chain Challenge: Savannah