Guy Hepner Gallery

InvaderAlert System For Sale

Series Performance & Market Position

Invader's Alert System series represents one of the most conceptually coherent bodies of work the French street artist has produced in edition form — a systematic engagement with surveillance culture rendered in his signature pixelated mosaic aesthetic. At Guy Hepner, Invader works have attracted collectors drawn to the intersection of street art, digital culture, and formal abstraction, and the Alert System editions have performed consistently within his secondary market.

Signed and authenticated Alert System prints regularly achieve €5,000–€20,000 at specialist street art auctions, with rare variants and large-format works commanding multiples of standard edition prices. Invader's overall market has strengthened considerably since his major international installations and retrospective attention.

Technical & Historical Context

The Alert System series draws on Invader's signature technique — pixel-based imagery derived from early video game graphics — to interrogate surveillance infrastructure. Alert symbols, warning signs, and digital notification iconography are rendered in mosaic tile compositions that bridge his street installation practice and his print work.

Invader's print editions are typically produced in strictly limited quantities and authenticated through a documented system that provides collectors with confidence in provenance. The physical mosaic works — ceramic tiles installed on urban surfaces globally — inform the visual language of the prints while functioning as distinct objects.

Individual Works & Collector Preferences

Within the Alert System series, works with the strongest colour contrast and most legible pixelated compositions command premiums. Collectors frequently acquire multiple works from the series to create installation groupings that replicate the serial logic of the street works.

Authentication & Condition Considerations

Invader provides authentication documentation for his editions. Works without this documentation carry substantially reduced market value. Condition considerations are standard for print works; the bold, flat colour areas of Invader's aesthetic are relatively robust against fading compared to more tonally complex prints.


Contact Guy Hepner at 177 10th Avenue, New York to enquire about Invader Alert System editions and current availability.

Invader's Practice in Context

Invader (a pseudonym; the French artist's identity remains undisclosed) has installed thousands of numbered ceramic tile mosaics in cities across six continents since beginning the project in 1998, each based on characters and imagery from early video games, most prominently Space Invaders. The Alert System series translates this street-installation practice into an edition context, applying the same pixel-based visual grammar to imagery drawn from surveillance and digital notification culture.

Invader documents each of his street installations via a dedicated mobile app ("Flash Invaders"), turning the global scavenger hunt for his work into a participatory game — a structure that has helped make his practice one of the most widely recognised in contemporary street art, extending well beyond traditional gallery audiences into a broader participatory public.

Invader Alert System

7 works available

Five Facts About Invader Alert System

  1. 01

    "Alert: System Infected" was Invader's first-ever published print, released in 2001.

  2. 02

    The design was inspired by the classic "bomb" alert icon created by designer Susan Kare for early Apple Macintosh computer systems.

  3. 03

    Unusually for the artist, the original 2001 print was produced using an offset printing process rather than screenprint, in a signed edition of 100 plus 20 unsigned prints.

  4. 04

    The image depicts a comic-style speech bubble containing a pixelated Space Invader alien, with radiating lines suggesting a warning transmission.

  5. 05

    Invader revisited the design in 2021 with new screenprinted colorways, including "Alert (Blue)" and "Alert (Gray)," each issued in an edition of 60.

Frequently Asked Questions

Where can I buy Invader Alert System prints for sale?

Invader Alert System prints for sale are available at Guy Hepner Gallery, 177 Tenth Avenue, New York. We offer authenticated editions with full provenance documentation sourced from the secondary market and directly from publishers.

Are Invader Alert System works limited editions?

Invader Alert System works — 7 available — are typically produced as limited editions, individually signed and numbered by the artist. Contact Guy Hepner Gallery for edition details on specific works.

How much do Invader Alert System prints cost?

Pricing for Invader Alert System prints varies by edition size, date, and condition. Contact Guy Hepner Gallery for current market pricing and availability.

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