[
    {
        "id": "basic-engine",
        "requirements": {
            "buildings": [
                {
                    "id": "research-lab",
                    "level": 1
                }
            ],
            "research": [],
            "resources": {
                "iron": 1000,
                "gold": 500
            }
        },
        "time": 60,
        "multiplier": 2
    }, {
        "id": "advanced-engine",
        "requirements": {
            "buildings": [
                {
                    "id": "research-lab",
                    "level": 5
                }
            ],
            "research": [
                {
                    "id": "basic-engine",
                    "level": 1
                }
            ],
            "resources": {
                "iron": 2000,
                "gold": 1000
            }
        },
        "time": 120,
        "multiplier": 3
    }, {
        "id": "combat-utilities",
        "requirements": {
            "buildings": [
                {
                    "id": "research-lab",
                    "level": 1
                }
            ],
            "research": [],
            "resources": {
                "iron": 1000,
                "gold": 500
            }
        },
        "time": 60,
        "multiplier": 2
    }, {
        "id": "defensive-utilities",
        "requirements": {
            "buildings": [
                {
                    "id": "research-lab",
                    "level": 1
                }
            ],
            "research": [],
            "resources": {
                "iron": 1000,
                "gold": 500
            }
        },
        "time": 60,
        "multiplier": 2
    }, {
        "id": "oxygen-production",
        "requirements": {
            "buildings": [
                {
                    "id": "research-lab",
                    "level": 1
                }
            ],
            "research": [],
            "resources": {
                "iron": 1000,
                "gold": 500
            }
        },
        "time": 200,
        "multiplier": 2
    }, {
        "id": "terraforming",
        "requirements": {
            "buildings": [
                {
                    "id": "research-lab",
                    "level": 1
                }
            ],
            "research": [],
            "resources": {
                "iron": 1000,
                "gold": 500
            }
        },
        "time": 500,
        "multiplier": 3
    }, {
        "id": "advanced-technologies",
        "requirements": {
            "buildings": [
                {
                    "id": "research-lab",
                    "level": 6
                }
            ],
            "research": [],
            "resources": {
                "iron": 1000,
                "gold": 500
            }
        },
        "time": 1500,
        "multiplier": 4
    }
]