1996 | 2–5 Players | Board Games | Fighting | Horror | Miniatures | Short Games (30 minutes to 1 hour) | Starts with I | Teen (12+) | Wargame Inferno (1996)
1997 | 2 Players | Abstract Strategy | Board Games | Short Games (30 minutes to 1 hour) | Starts with I Infinite Chess (1997)
1–4 Players | 2004 | Abstract Strategy | Board Games | Junior (8+) | Medium-Length Games (1 to 2 hours) | Starts with I Ingenious (2004)
2–6 Players | 2005 | Board Games | Exploration | Junior (8+) | Medium-Length Games (1 to 2 hours) | Starts with I Inkan Aarre (2005)
2–5 Players | 2023 | Board Games | Party Game | Short Games (30 minutes to 1 hour) | Starts with I | Teen (12+) Inkognito (2023)
1981 | 2–4 Players | Abstract | Abstract Strategy | Board Games | Family | Junior (8+) | Maze | Medium-Length Games (1 to 2 hours) | Puzzle | Starts with I Inner Circle (1981)
1–7 Players | 1992 | Animals | Board Games | Educational | Fighting | Horror | Long Games (Over 2 hours) | Science Fiction | Starts with I | Teen (12+) Insecta (1992)
1988 | 2–6 Players | Board Games | Economic | Long Games (Over 2 hours) | Starts with I | Teen (12+) Insider Dealing (1988)
1970 | 2 Players | Board Games | Long Games (Over 2 hours) | Sports | Starts with I International Cricket (1970)
1982 | 2 Players | Board Games | Long Games (Over 2 hours) | Science Fiction | Starts with I | Teen (12+) | Wargame Interstellar Wars (1982)
1–3 Players | 1980 | Board Games | Horror | Preteen (10+) | Science Fiction | Short Games (30 minutes to 1 hour) | Starts with I | Thematic | Wargame Intruder (1980)