GeoMoments and CityConqueror

GeoMoments is an experimental location-based social network developed by the lab of Dr. Konstantinos Papangelis.

GeoMoments has been developed to help us explore the locative mobile social media phenomenon and view it through a social navigation and exploration lens. This is intended to provide us with a better understanding of its influences and the ways in which we experience our surroundings.  While there are several location-based social networks out there that that let you access and look at the geo-tagged information they are not concerned about exploration, but rather about access to content – photographs, audio etc. In GeoMoments we deliberately restrict access to this content and enable the users to see only what is around their physical location. This is intended and unpack the ways in location-based social networks influence the creation and consumption of geographically based social information.

Currently, GeoMoments is in the 0.1C version. This is essentially the first privatepublic release (oxymoron we know.. but even tho GeoMoments is quite stable its a bit rough around the edges). As such to use GeoMoments you have to have a * e-mail address in order to use it. That being said if you want to give it a go let me know and I will register an account for you.

Further to this, we have developed a location based game (Called City Conqueror) on top of GeoMoments. City Conqueror was inspired by the board game Risk in which players conquer countries on a world map, deploy units to defend their countries and attack countries owned by other players. The concept of the game developed in this project is that players can conquer territories with a specific radius centered on their physical location, deploy units to defend their territories and attack territories of other users in order to conquer them. Territories claimed by users are plotted on a map, showing the users location and all territories nearby. To attack an enemy territory a user must be physically located in the range of territory he wants to attack. Territories owned by a user generate resources with which the user can buy new and stronger units to defend his territories or attack others. In order to drive the user to explore his surroundings we implemented the following features:

  • Fog of war: The user can only see territories in an area that he has visited before. To clear the fog of war and see what is hidden beneath, he must physically explore the area.
  • Achievements: The user will be rewarded with achievements for actions that are related to exploring his surrounding and success in the game such as claiming a certain number of territories, defeating other opponents, uncovering a certain area from the fog of war.
  • Hidden treasures: When a player attacks a territory and wins, he can find a treasure that is hidden within the range of the territory by walking around, following a compass pointing to the treasure. The time to find a treasure is limited and the reward when found is resources, units or achievements.

Next steps in the development of GeoMoments include (among others):

    • Integration of GeoMoments with various open linked data sources
    • Area/place check- in mechanisms (e.g. presence over time)
    • Badges/achievments for geomoments
    • Fine grain privacy control
    • Geo-tagging of audio
    • Audio trails
    • Stories (essentially the ability to link moments together)
    • Local/hyper-local chat/forum functionality
    • Timeline
    • VR/Augmented reality moments (we are especially interested in the cyber/physical aspect)
    • Integration with already existing social networks
    • Crowdsourcing elements
    • Development of GeoMoments for non-intrusive interfaces (e.g. smart-watches, smart-glasses)

Immediate next steps in the development of CityConqueror include (among others):

    • Inclussion of home territories
    •  More types of units expanding the current rock-paper-scissor fighting mechanic.
    • Decorations and personalisation of territories


  • Papangelis K, Metzger M, Sheng Y, Liang HN, Chamberlain A. ”Get off my lawn!” – Starting to Understand Territoriality in Location Based Games. In CHI ’17 Extended Abstracts on Human Factors in Computing Systems (CHI EA ’17). ACM, New York, NY, USA, Page number: 1955-1961, DOI:
  • Papangelis K, Sheng Y, Liang HN, Chamberlain A, Javed-Khan V, Cao T (2017). Unfolding the Interplay of Self- identity and Expressions of Territoriality in Location-based Social Networks. In Adjunct proceedings of the ACM International Joint Conference on Pervasive and Ubiquitous Computing (UBICOMP ’17). ACM 2017. Page-number: Not available yet DOI: Not available yet.
  • Papangelis K, Metzger M, Liang HN, Sheng Y, Chamberlain A (2017). CityConqueror: Perception of Place and Space, Mobility and Human Territoriality in Location-based Mobile Games. Interactive, Mobile, Wearable and Ubiquitous Technologies (IMWUT) journal. Paper Presented at the International Joint Conference on Pervasive and Ubiquitous Computing – UBICOMP ’17. ACM 2017. ISSN: Not available yet, DOI: Not available yet.
  • Chamberlain A, Boedker M, Papangelis K (2017). Mapping Media and Meaning: Autoethnography as an Approach to Designing Personal Heritage Soundscapes. Audio Mostly 2017: Augmented and Participatory Sound/Music Experiences (Audio Mostly 2017). ACM 2017.  Page Number: not available yet, DOI: not available yet.
  • Chamberlain A, Bodker M, Hazzard A, McGookin D, Roure D De, Wicox P, Papangelis K (2017). Audio Technology and Mobile Human-Computer Interaction: from space and place, to social media, music composition and creation. International Journal of Mobile Human Computer Interaction (IJMHCI), International Journal of Mobile Human Computer Interaction 9, 4: 25–40.

The Team

  •    Konstantinos Papangelis
  •    Irwyn Sadien
  •    Ting Cao



GeoMoments Screenshots

City Conqueror Screenshots