Zoned federation of game servers: a peer-to-peer approach to scalable multi-player online games. - Takuji Iimura; Hiroaki Hazeyama; Youki Kadobayashi (NETGAMES, 2004)

Distributed Scalable Multi-player Online Game Servers on Peer-to-Peer Networks. - Takuji Iimura; Hiroaki Hazeyama; Youki Kadobayashi (Inf. Media Technol., 2006)

Nazca: A Geographic Location Service. - Mio Suzuki; Teruaki Yokoyama; Takuji Iimura; Shigeru Kashihara; Takeshi Okuda; Suguru Yamaguchi (SAINT Workshops, 2007)

EyeBit: Eye-Tracking Approach for Enforcing Phishing Prevention Habits. - Daisuke Miyamoto; Takuji Iimura; Gregory Blanc; Hajime Tazaki; Youki Kadobayashi (BADGERS@ESORICS, 2014)

NECOMAtter: curating approach for sharing cyber threat information. - Takuji Iimura; Daisuke Miyamoto; Hajime Tazaki; Youki Kadobayashi (CFI, 2014)

PACKTER: implementation of internet traffic visualizer and extension for network forensics. - Daisuke Miyamoto; Takuji Iimura (Computing, 2014)

Cloud5GC : Design and implementation of scalable and stateless mobile core system on public cloud. - Kunio Akashi; Seiichi Yamamoto; Haruki Sakurai; Koki Ito; Tomohiro Ishihara; Takuji Iimura; Yuji Sekiya; Hiroki Watanabe; Keiichi Shima; Katsuhiro Horiba (ICOIN, 2024)

P-Cloud5GC: Innovative 5G Core Architecture on Public Cloud with Scalability and Fault Tolerance. - Kunio Akashi; Hiroki Watanabe; Seiichi Yamamoto; Tomohiro Ishihara; Takuji Iimura; Yuji Sekiya (NetSoft, 2025)