The guide aims to equip Spanish video‑game developers and publishers with a practical framework for securing external financing beyond traditional bank credit. It argues that investment agreements (IAs) represent a flexible, hybrid model that can bridge the gap between shareholders’ equity and debt, allowing investors to fund projects while retaining political and economic rights comparable to shareholders without immediate capital‑increase obligations. Key content outlines the typical structure of an IA: investors provide lump‑sum or milestone‑linked capital, receive a defined share of commercial revenues, and obtain voting, dividend and information rights. Comparative analysis shows that, unlike standard debt, IAs do not impose fixed repayment schedules, instead tying returns to project profitability and offering conversion mechanisms that can transform credit into equity if revenues fall short. The guide enumerates standard clauses—profitability timeframes, capitalisation rights, representations and warranties, confidentiality, “bad‑leaver” provisions, and pre‑emptive rights—to protect both parties and manage risk. An illustrative example notes that a €100 investment with a 20 % return target is achieved once the project generates €120 in revenue. The scope is national, targeting the Spanish video‑game sector and addressing developers of any size who seek alternative funding. Authored by legal counsel from Pérez‑Llorca and the Asociación Española de Videojuegos, the document draws on industry practice rather than empirical surveys, presenting a checklist and glossary to support contract drafting and due‑diligence processes. Its conclusion stresses that, as acquisitions and external investments rise, IA investors will increasingly influence project governance despite not holding formal share capital.