Exhibit 99.1

        HERCULES PARTICIPATES IN $27.5M FINANCING FOR AGEIA TECHNOLOGIES

    PALO ALTO, Calif., Oct. 4 /PRNewswire-FirstCall/ -- Hercules Technology
Growth Capital, Inc. (Nasdaq: HTGC), a leading debt and equity growth capital
provider to technology related companies, announced that it participated in a
$27.5 million investment in AGEIA Technologies on Sept. 14.  AGEIA is a
fabless semiconductor company and the pioneer of hardware-accelerated physics
for games.  The capital raised will be used to bring the AGEIA flagship
PhysX(TM) processor to the gaming market and meet growing market demand for
the company's AGEIA PhysX Software Development Kit.

    (Logo:  http://www.newscom.com/cgi-bin/prnh/20050609/SFTH149LOGO )

    "Gamers consistently demand greater levels of realism in characters and
environments," said Sam Bhaumik, managing director at Hercules Technology
Growth Capital.  "We are proud to partner with AGEIA to deliver physics
technology to games that will significantly impact realism as 3D graphics did
ten years ago."

    "At AGEIA we strive to make physical interactions ubiquitous within games,
so we work closely with game developers to create compelling content," said
Manju Hegde, founder and CEO of AGEIA.  "The continued support from our
strategic capital partners, including Hercules Technology Growth Capital,
allows us to do that today while continuing to explore future PhysX technology
implementations."

    About Hercules Technology Growth Capital:
    Founded in December 2003, Hercules Technology Growth Capital, Inc. is a
NASDAQ traded specialized finance company providing debt and equity growth
capital to technology related companies at all stages of development. The
company primarily finances privately held companies backed by leading venture
capital and private equity firms and also may finance certain publicly traded
companies. Hercules focuses its investments in companies active in technology
and technology related industries such as computer software and hardware,
networking systems, semiconductors, semiconductor capital equipment,
information technology infrastructure, Internet consumer and business
services, telecommunications, and life sciences. The company's investments are
originated through its principal office located in the Silicon Valley, as well
as additional offices in the Boston, Boulder and Chicago areas. Providing
capital to privately held companies backed by leading venture capital and
private equity firms involves a certain degree of credit risk and may result
in potential losses.

    For more information, please visit http://www.herculestech.com .
Companies interested in learning more about financing opportunities should
contact info@herculestech.com or call 650-289-3060.


    About AGEIA Technologies:
    AGEIA Technologies, Inc. is a fabless semiconductor company and the
pioneer of hardware-accelerated physics for games. Its flagship product, the
physX processor, is the world's first dedicated physics processing unit -- a
completely new hardware category. The physX processor and supporting software
deliver the processing horsepower to calculate real-time interactive worlds.
Developers can define these worlds to obey the laws of classical physics, or
create their own physical laws that make their game a unique,
hyper-dimensional experience.

    AGEIA seeks to ignite innovation in the games industry by working with
leading developers, publishers, add-in board vendors and console manufacturers
to deliver the next generation of physically immersive entertainment. Consumer
add-in boards and systems equipped with the AGEIA physX processor and games
that take advantage of the technology will be available in late 2005.  For
more information visit http://www.ageia.com .

SOURCE  Hercules Technology Growth Capital, Inc.
    -0-                             10/04/2005
    /CONTACT:  Deborah Stapleton, of Stapleton, +1-650-470-0200, for Hercules
Technology Growth Capital, Inc., or Hercules Technology Growth Capital, Inc.,
main, +1-650-289-3060, or info@herculestech.com/
    /Photo:  http://www.newscom.com/cgi-bin/prnh/20050609/SFTH149LOGO
             AP Archive:  http://photoarchive.ap.org
             PRN Photo Desk photodesk@prnewswire.com/
    /Web site:  http://www.ageia.com /
    /Web site:  http://www.herculestech.com /