Gearbox Software's Borderlands 2 has shipped 5 million units to date, Take-Two interactive announced this morning in its second quarter financials. The company also noted that XCOM: Enemy Unknown is "proving to be a critical and commercial success." Both games are remarked as having "strong digital sales."

"Take-Two's second quarter revenue and earnings exceeded our outlook, driven by the breakout success of 2K's Borderlands 2 and robust demand for our catalog and digitally delivered offerings," noted Take-Two CEO Strauss Zelnick. "Moreover, with Grand Theft Auto 5 slated for spring 2013, we are poised to generate substantial revenue and earnings growth in fiscal year 2014."

Both Borderlands 2 and XCOM: Enemy Unknown currently hold near 90 Metacritic ratings.