The premium price tag for 2K Games and Firaxis's XCOM: Enemy Unknown on iOS certainly caused a stir around these parts.

For Take-Two CEO Strauss Zelnick, however, the XCOM: Enemy Unknown launch was a "success" and "illustrates that consumers are willing to pay a premium price for a premium entertainment".

The turn-based alien blaster, which was a port of an 8-month-old PC and console game, hit the App Store for £13.99 / $19.99 last month. It entered the Top 10 Grossing apps chart on iPad in the first week.

"This bodes well for the opportunity to deliver profitably our most immersive triple-A titles to mobile platforms as they evolve," Zelnick said.

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Previously, lead designer for XCOM: Enemy Unknown Jake Solomon told Pocket Gamer that Firaxis is thinking about an iOS version of epic historical strategy game Civilization V: "It really depends on how people respond to what we're doing here with XCOM: Enemy Unknown."

Zelnick briefly mentioned the firm's other iOS games, like free-to-play strategy games Haunted Hollow and Sid Meier's Ace Patrol, stating: "We also benefitted from in-game purchases of virtual goods in our growing portfolio of mobile offerings."

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