For older shareware games (e.g., Doom , Commander Keen ), you can find legal unlock codes to convert shareware to full versions. Sites like The House of Games archive old unlock codes. Again, not for Battle: Los Angeles .
| Game | Platform | Similarity | Free Unlock Content? | |------|----------|------------|----------------------| | Warframe | PC/Console | Third-person sci-fi, alien enemies | Entire game free | | Planetside 2 | PC | Large-scale futuristic battles | Free with unlocks via gameplay | | Enlisted | PC/Console | Squad-based FPS, realistic | Free, no pay-to-win | | Call of Duty: Warzone | PC/Console | Modern military, fast action | Free battle royale | | Earth Defense Force 5 (trial) | PC | Cheesy alien invasion | Free trial (limited) | For older shareware games (e