Complex sentence: The company became profitable in its second month, by 1986 had $10 million in sales, and by 1987 "Computer Gaming World" considered it as one of the top five computer-game companies, with Activision, Electronic Arts, and Epyx.
Split into simpler sentences: The company became profitable in its second month and had $10 million in sales by 1986. By 1987, "Computer Gaming World" considered it as one of the top five computer game companies, alongside Activision, Electronic Arts and Epyx.