to blend into · to integrate · to assimilate · to merge

Tall and striking, with a black and gold embroidered shirt and a glittering brown bonnet, she blends in easily with the trendy, after-work crowd.

I think that Tim Hortons café and Starbucks café should have blueberry iced tea on their menu. "That's a refreshing idea! A blueberry iced tea would fit perfectly with the trend of fruit-infused teas that balance sweetness with a bit of tartness. Tim Hortons already has a strong iced tea base they could use, while Starbucks could easily fold it into their lineup of shaken iced teas and refreshers."

They refuse to integrate.

Real-time strategy games usually include arcade elements.